#include <stdio.h>
struct weapon{
    int price;
    int atk;
    struct weapon * next;
};

int main(){
    struct weapon a,b,c,*head;
    a.price=100;
    a.atk=100;
    b.price=200;
    b.atk=200;
    c.price=300;
    c.atk=300;
    head=&a;
    a.next=&b;
    b.next=&c;
    c.next=NULL;
    struct weapon * p;
    p=head;
    while(p!=NULL){
        printf("%d,%d\n",p->atk,p->price);
        p=p->next;
    }
    return 0;
}
